How many miles do i need to drive to reset ODBII?

any time i unhook my battery on my 2000 F150,the EVAP is the last one to set to ready,but it does not matter if i am going for emissions test or not,it will pass if it shows not ready.in NC on any 2000 or older vehicle,you can have 2 monitors not ready and it will still pass..on 1995 and older,there is NO emissions test,only safety checks,tires,wipers,lights,etc.so i would only have to have 6 of 8 monitors set to ready on the 2000 F150!